Brief Introduction Of Polyurethane Rubber Roller

The rubber roller is an important accessory on the printing press, which has an important impact on the quality of the printed product. The rubber roller has different functions on different types of printing machines. To meet various production requirements and ensure printing quality is of great significance. After China's entry into the WTO, the competition in the cultural print market has become increasingly fierce, and the quality requirements for prints have continued to increase. The number of high-end high-speed printing presses has also increased, and the quality requirements for printing rubber rollers for printing presses have become higher and higher. It can be said that high-quality printing rubber rollers with high-end printing machines can produce good printing products. At present, among the rubber rollers used in printing plants, natural rubber rubber rollers and synthetic rubber rubber rollers are more common. High-performance polymer polymer rubber rollers have been gradually accepted by companies with high-quality printing presses and will be used more widely. Polyurethane rubber rollers are one of them.



   Performance characteristics of polyurethane rubber roller

Polyurethane rubber roller is suitable for all kinds of printing machinery, especially for high-end printing presses, and has many superior characteristics.
1. The appearance is bright, the surface of the colloid is fine and smooth, and the gel material and the mandrel are firmly bonded. The size of the rubber roller is strictly controlled, and the size will not change greatly under different temperature and humidity conditions. It can adapt to the high temperature and high humidity environment of the southern printing workshop and the cold and dry climate conditions in the north.
2. Polyurethane rubber roller hardness index is wide, from HSA15 to HSD80, can meet the requirements of rubber roller hardness of different types of printing machines.
3. The colloid for polyurethane rubber roller has sufficient surface viscosity, which can ensure good ink transfer and inking performance of the rubber roller during printing, and its good ink-receptive performance can ensure high-quality printing.
4. Polyurethane rubber roller has good chemical properties and is suitable for various types of inks and printing methods. Special resistance to the solvent components in various inks, fountain solutions, and cleaning agents. Polyurethane rubber rollers are also suitable for UV ink rubber rollers and varnished rubber rollers, etc., especially have good solvent resistance to boiling water, diesel, gasoline, lubricants, kerosene, toluene, alcohol and saline solution. But it is not resistant to acetone, ethyl acetate and strong acids and bases.
5. Polyurethane rubber rollers have excellent physical properties. The rubber rollers will not harden and age for a long time, and have good tear resistance, resilience and excellent wear resistance. Therefore, they have a long service life and are easy to store. Affect the use effect; can withstand high pressure, high speed, high temperature, high humidity production environment. Experiments show that the tensile strength and abrasion resistance of polyurethane rubber rollers are three to five times that of natural rubber rubber rollers; the compression set and the resilience are good; the service life of polyurethane rubber rollers is more than one times that of ordinary rubber rollers.
6. Polyurethane rubber rollers have excellent hydrophilicity, so they can be used as water and alcohol dampening system rubber rollers with good results.
7. Polyurethane rubber rollers are easy to clean, easy to switch between dark and light color inks, and convenient for color change during printing.

  Precautions for use
1. Avoid contact with solvents such as ethyl acetate, butyl acetate, acetone, methyl ethyl ketone and strong acids and bases during use.
2. When installing the rubber roller, it should be aligned to a parallel position. The pressure between the rubber roller and the surface of the rubber roller must be uniform.
3. When storing the rubber roller, you must use a special rubber roller holder to ensure that the surface of the rubber roller is not pressed and does not touch any other objects for a long time.
4. The paper wool and ink stains on the surface of the rubber roller must be cleaned with a cleaning solution after daily shutdown.